This is an assembly pack made up of the Makita BHR243 Brushless Rotary Hammer Drill and Makita DX01 Automatic Dust Extraction Unit. The DHR243 includes a Quick Change Chuck, able to drill in concrete as fast or faster than 24V Cordless Combination Hammer model BHR200. One touch slide chuck for SDS-plus bit. Easy-to-grip handle ergonomically designed to give maximum power thrust, and provide a sure and comfortable grip in any operation; overhead application, drilling with palm-up or palm-down grip. 3 mode operation: Rotation and Hammering Hammering only Rotation only The tool body is separated into the upper and lower housings at the foot of handle portion where the houses are jointed with vibration absorbing cushion rubbers. Higher productivity than model BHR202 achieved .